I must agree with the "Neon Brigade"... That was just killing some great ideas...
Apart from that - I really don't have any any sub team in mind as a worst idea. But again - situation was different here.
As you probably know, in Poland, we know Joes from, let's say around the 1990 series and later. So we have no really good Joes to compare to. And - for example cpt. Grid Iron was an awesome figure for us back then - looking tough, with whole lot of gear!
Ninja force? No problem with this series for me, as well as Eco Warriors or Mega Marines

Star Brigade is not my favourite and marks the end of this toys - but I got used to it somehow.
I believe it's all a matter of a Joe market at a time. You guys were all lucky because you got them from the beginning
But there's one thing that I can't stand. The 25th body style... Great idea, but poor execution... I don't like them being oversized, but most of all - HEADS!! Considering a hollow chin, it all looks like a mask on some kind of alien.. And reminds me more of a doll than an Action Figure.
I suppose that the only figure that will appear in my collection from the 25th is Nemesis immortal, but apart from him - you'll never see me having this "things" in my collection.
__________________
My weekly TOP5:
The sacrifice of innocence the hailing of the gun
My way was death and madness, now let the Tower come